ORA-12504: TNS:listener was not given the SERVICE_NAME in CONNECT_DATA

Centos5.5 安装Oracle11g客户端，配置了本地的net服务后，用sqlplus连接报错：

tnsnames.ora配置如下

orcl =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.39.199)(PORT = 1521))
(CONNECT_DATA =
(SERVICE = DEDICATED)
(SERVICE_NAME = orcl)
)
)

解决方案：修改tnsname.ora文件内容如下：

172.16.39.199 =
(DESCRIPTION =
(ADDRESS = (PROTOCOL = TCP)(HOST = 172.16.39.199)(PORT = 1521))
(CONNECT_DATA =
(SERVICE = DEDICATED)
(SERVICE_NAME = orcl)
)
)

再次连接，成功。